Hive account@mytechtrail:

The Monero network is scheduled to slightly change the hashing algorithm on October 18th. Our updated JavaScript files contain the current and the new hashing algorithm. The miner will automatically switch to the new version on the scheduled date.

But actually based on https://www.coinwarz.com/difficulty-charts/monero-difficulty-chart the difficulty dropped. Can you try to clean your browser cache and reload the page? :)